Yarn-controller.



A. H. SAWTELL. YARN CONTROLLER.

APPLICATION. FILED. JAN. a. 1916.

Patented Oct. 24, 1916.

ATTORN EY UNITED STATES PATENT OFFICE.

ALBERT H. SAWTELL, OF PROVIDENCE, RHODE ISLAND, ASSIGN OR, BY MESNE ASSIGN- MENTS, TO UNIVERSAL WINDING COMPANY, OF BOSTON, MASSACHUSETTS, A' COR- PORATION OF MASSACHUSETTS.

YARN-CONTROLLER.

Specification of Letters Patent.

Patented Oct. 24, 1916.

' Application filed January 3, 1916. Serial No. 69,958.

vide means for controlling the unwinding I of the yarn from the supply package to clear it of snarls and kinks andv to effect an even, free delivery without sub gectmg 1t to undue strain or excessive tenslon.

The manner and means for carrying out the improvement are fully described in the following specification, illustrated by the accompanying drawings, in which like reference characters designate like parts.

In the drawings: Figure 1 is a side elevation of my improved yarn-controller illustrating the manner in which the yarn leads therethrough; and Fig. 2 is a plan view of the same.

Referring to the drawings, R designates a horizontal rod which forms the supporting means for the controller and constitutes a part of the creel on which the supply packages are mounted. Usually the creel is made up of a series of parallel uprights or standards constructed of piping and arranged to support a plurality of lateral rods spaced one above another. In this Way frames are rovided which may be arranged in the orm of a V, with the divergent sides supporting a series of yarn cops from'which the yarn is delivered to the warping or beaming machine.

My improved controller comprises essentially a main frame F of saddle-like construction to adapt it to be mounted on the horizontal rod R and arranged to support a series of coordinated rollers between which the yarn draws. Referring to Fig. 2, the frame F'is preferably of rectangular form having its sides f, f arched to straddle the rod R as shown in Fig. 1. A set-screw s is screwed through a rib 7 on the front of the frame F with its chamfered end engaging the side of the rod R to clamp the de- Vice in place. At its rear the frame F is of trough-like construction provided with an inclined wall 7. In the wall f are formed suitable openings f, f which serve to guide the yarn y as it draws through the device. Mounted in the trough .of the frame F is a roller B arranged with its axis parallel w1th and in the same plane as that of the supportlng rod R. The roller B is preferably formed from a solid, round rod and is provided at its ends with axially-projecting gudgeons b, b. To adapt the roller R to rotate freely under the draft of the yarn I provide it with anti-friction bearings 12, I) let into the sides of the frame F. Preferably the bearings b, b are made in the form of blocks fitted to grooves f, f drilled into the sides f, f of the frame F. Theblocks b b are constructed of composition material treated with graphite and commercially known as arguto. The blocks 6, b have slots 5 6 into which the gudgeons b, b fit and in this way oilless bearings are provided for the roller R which are capable of long Wear without deterioration.

Adjacent the. center of the frame F its sides f, f are cut away or slotted at F, f to receive the ends of a second floating roller C. The roller C is constructed from a section of cylindrical rod-and normally rests on the rod R and roller B with a slight clearance between it's'ends and the sides of the frame F. The roller B and rod R are spaced some little distance apart and the roller C sets down between them with a contact along their peripheries. Rollers of different diameters may be substituted for the floating one 0 here shown to provide for a variation in the weight in accordance-with the pressure required on the yarn. For instance, with very fine yarns a smaller roller would be used while with coarse yarns a heavier one may be employed. i

In Flg. 1,.I have illustrated the supplybobbin Y from which the yarn delivers as set at an angle to the controller-device and arranged below it at the rear. This is the usual arrangement on the creel, but any other coordination of the device with the 85 caught as they enter the controller and pre- F and overthe roller B and rod B. After the yarns have been passed through the device in this manner the roller C is dropped into place in its guiding-slots f", f in the sides of the frame ,F as shown. in Fig. 1.

' draws between the The floating roller C bears onthe yarn y and deflects it from its straight course across the. top of the roller Band rod R so as to exert a slight drag during itsdelivery. It is to be understood, however, that the purpose of my improved arrangement is not primarily to apply tension or resistance to the delivery of the yarn, but on the contrary the device acts more as a controller to prevent too free a delivery and more particularly to straighten and smooth out the yarn as it draws through it. That is to say, as the yarn rollers B and C it imparts rotation thereto and anytwists or kinks which occur as it unwinds from the bobbin are held back and straightened out so that the yarn delivers from the controller smoothly and evenly without snarling or tangling. It has been demonstrated that the two rotating rollers B and C arranged as above described will clear the yarn of practically all twists, loops or snarls, which are vented from passing therethrough. In this way my improved device acts to iron out the yarn and prepare. it for a smooth, even device which livery under a constant tension without, however, applying an excessive resistance to its draft.

I am aware that it is old in the art to employ a series of round rods or rollers over yarn draws to apply tension to its delivery. Various and sundry of such devices are familiar to me and have been experimented usual arrangement and have provided a dedifl'ers therefrom in several essen tialparticulars. In the first place the first 55 roller B across which the yarn draws is free to rotate While the second element R over which the yarn leads is fixed or incapable of rotation. This provides that the upper bearing roller C while free to turn with the roller B is also restrained from too free a rotation on account of its-relation to the fixed element R. These details are important in securing the exact method of operation of the device as above described to accomplish the result desired. That is to say, my improved device is not merely a tension-means the wall f of the frame lel alinement in with for the purpose described. In my present improvement, how-- ever, I have departed somewhat from the for applying resistance to the draft of the yarn drawing through it, but on the-con trary the peculiar arrangement of its elements provides for a novel method of operation which adapts it to act as a controller for clearing the yarn of kinks and snarls as before described. It is also to be noted that through an ingenious construction and coordination of the parts of the controller the rod R of the creel acts both as a support for the whole device and also as one of the essential elements thereof. In other words, the rod R serves two purposes; first, as a mounting for the frame F, and second, as the fixed element for supporting the floating roller B while also acting as a support for the yarn as it draws therebetween. In this way the device is made much simpler and more compact while also providing for a proper relation of its operating parts in whatever position it maybe adjusted'on the creel-frame.

"delivery, but what I seek to cover is the specific arrangement of the elements which provides for a novel method of operation to i secure a new result.

Therefore, what I claim is 1. In a yarn-controller for straightening and clearing a delivering yarn from twists and kinks, the combination with a fixed rod and a rotatable roller arranged with their axes in parallel alinement in the same plane, of a floating roller adapted to rest on the rod and its associated roller to deflect the yarn from a straight course as it passes thereacross, said first roller being free to rotate from the draft of the yarn and the floating roller having its rotation resisted through its relation to the fixed rod.

In a'yarn-controller for straightening and smoothing out a delivering yarn, the combination of a fixed cylindrical element and a cylindrical roller arranged in paralspaced relation, of a floating roller adapted to rest on the fixed rod and its parallel roller to deflect the yarn from astr'aight course as it passes thereover, said floating roller being rotatable with the underneath roller by the draft of the yarn but controlled in its rotation through its relation to the fixed rod which serves as an element for its support.

3. In a device for controlling the delivery of yarn from supply cops or bobbins, the combination with a fixed horizontal rod, of a frame clamped on said rod and provided with bearings, a cylindrical roller rotatably supported in said bearings in parallel alinement with the fixed rod, and a floating roller arranged to rest on the first roller and the fixed rod to bear on the yarn drawing across the same, said floating roller adapted to be rotatedby the draftof the yarnbut having its turning movement controlled through its relation with the fixed rod which supports it.

4. In a controller-device for yarn or the like, the combination with a fixed horizontal rod, of a frame formed to straddle the rod to adapt it to be clamped thereto, said frame provided with bearings on its opposite sides, a roller rotatably supported in said bearings in parallel alinement with the fixed rod, and a second roller adapted to fit within the sides of the frame to rest upon the first roller and the fixed rod in contact with their peripheries.

5. In a yarn-controller, the combination with the horizontal rod of a creel, of a rectangular frame mounted on said rod, means for clamping said frame to the rod, antifriction bearings in the sides of the frame, a roller 'rotatably mounted in said bearings in parallel alinement with the supporting rod, and a second roller extending between the sides of the frame and resting on the first roller and the supporting rod.

6. In a yam-controller, the combination with a horizontal rod, of a saddle-like frame formed to straddle the rod and constructed with a trough at one end, slotted bearings mounted in the sides of the frame, a roller rotatably supported in said bearings in parallel alinement with the horizontal rod, and a second roller floating in slots at the sides of the frame and resting against the peripheries of the first roller and the rod.

In testimony whereof I afiix my signature in presence of two witnesses.

I ALBERT H. SAWTELL. Witnesses:

ARTHUR A. ARMING'roN, ARTHUR A. Horn 

